This is exactly my worry. Even guys like Pritchard and Hauser have gotten exposed in past playoffs. All of Walsh, Scheierman, Hugo, and even Garza have been surprisingly useful in the regular season. I worry how they hold up in the playoffs.
But this team has been surprising me all season, so who knows.
I hear you, but I'd much rather know now than in 2027-28 when their vet mins (except for Gonzalez) all expire and they will all be due bigger deals, how much they might be worth

This is the exciting part of this season and next for me - seeing who of these guys might turn into PP-type mainstays, and who might flame out. In a way it's like buying into a lesser known, but promising, stock and waiting to see how they grow, and when to cut your losses if they don't. If they don't work out the way you want, they can always be packaged to fetch one of those bigger name "playoff guys" you mentioned, because they are young and someone else might take a chance on them.
And obviously it's unrealistic to have no weaknesses in every position in the age of the second apron unless you get lucky in the draft or find a promising, undervalued player - I would argue we have four of those in our roster right now, we just need to find out what their limits are. It's extremely unrealistic to have high priced talent in every position like we did in 2024 and when you do you better be pretty confident you have a really good shot. Look at OKC's roster, other than Shai and Chet and maybe JWill most of them are relative no-names, or were when they were acquired. I think this is how teams have to be built now - the age of buying players at the top of the market isn't really realistic in this salary cap environment.